Do, The Vinh, and Nguyen Anh Vu Le. 2025. “Development of a Multi-Objective Optimization Model for the Hard Turning of SKD11 Steel With Nanofluid-Al₂O₃ Minimum Quantity Lubrication Using RSM and PSO”. Engineering, Technology & Applied Science Research 15 (4). Greece:24897-903. https://doi.org/10.48084/etasr.11351.